Which grinder is better to grind the putty on the walls

Types of grinders

According to the principle of operation, such devices can be divided into two main types: pneumatic and electrical.

The main advantage of pneumatic models is their low weight and relatively low cost. Such devices are very often used as a professional tool, since even with prolonged work with them, hands do not get tired and labor productivity does not decrease. These positive qualities can be explained very simply. pneumatic devices do not have motors. Their working mechanism is set in motion under the influence of compressed air pressure supplied through a hose from a special compressor.

The main disadvantage of pneumatic grinders is the presence of a bulky compressor. In other words, such a tool can only work in a workshop where there is a possibility of supplying compressed air. That is why devices of this type are mainly used in car services and are rarely used for repair work. If such equipment is used to carry out repairs in your own apartment, you will have to additionally purchase an expensive compressor.

As for electric models, their main advantage is high mobility. The ability to connect to the mains is almost always there, and using an extension cord is absolutely no problem. The disadvantages of a power tool include its relatively large weight and overall dimensions, as well as its high cost.

If a sander is chosen for repair work in a house or apartment and will not be used in the future on large construction projects, then the choice in favor of electric models is obvious.

According to the method of action on the treated surface, grinders can be conditionally divided into the following groups:

Let’s take a closer look at each of these types of grinders.

Which grinder is better to grind the putty on the walls

which, grinder, better, grind

The use of a sander for ceilings and walls significantly speeds up and simplifies the work on processing substrates. Even if you very carefully performed the puttying, stripes from the spatula, all kinds of sagging and other small defects that will be especially noticeable after painting will still remain on the coating.

Band models

This tool is usually used for large areas. Such a grinder uses an abrasive belt stretched on special rollers for operation, during the rotation of which there is a constant unidirectional movement of the belt. Tape models have the highest performance in comparison with their counterparts, however, they are not suitable for final polishing of walls.

When choosing a belt-type grinder, you should pay attention to the following functions of the purchased device:

  • Automatic centering of the tape. With the help of special rollers, it is held exactly along the axis of movement. This function prevents slipping of the tape, therefore its presence significantly improves the usability of this tool.
  • Vacuum cleaner connection. Almost all modern models of grinders are equipped with a similar product, but this does not negate its importance for preventing the appearance of a large amount of dust from putty in the room where repair work is carried out.
  • Additional rollers included in the design of the grinder make it possible to eliminate the appearance of the so-called dead zones when sanding close to walls.

Process features

The grinding process can be attributed to repair activities that are performed without much physical effort. It is much lighter than plastering, painting or wallpapering. Grinding work can be roughly divided into five stages.

Grinding material preparation. At this stage, you need to take care of a sufficient amount of sandpaper or mesh (whichever you prefer). Indeed, in the process of work, they quickly become clogged and require replacement.

Work must start from a corner and move evenly to another corner. We start sanding from the ceiling to the floor. The size of one call must be determined from the span of your hands, often the area of ​​this call is about a meter.

With smooth movements with light pressure, begin to rub the surface. Having reached the base of the floor, we proceed to another strip also from the ceiling. The main thing at this stage is not to start sanding a section of the wall that has already been passed in the second circle.

If there is a large depression on the wall, skip this place and move on. After passing the entire wall, return and putty the problem area. After it dries, sand it individually.

Checking the quality of work. You can check the quality of sanding the walls after puttingty using a level. Of course, you should not expect a perfectly flat surface, but there should be no obvious differences either.

Experts recommend: given the fact that grinding work is a dusty process, it is necessary to isolate the repaired room from others in advance using doors or curtains on the doorway.

It is also recommended to remove tools and materials that are not being used.

Wall sanding jobs are much faster when using a sander that runs on electricity. Today, such machines are divided into three main types:

  • Draw frames;
  • Orbital eccentric machines;
  • Vibrating flat machines.

Belt and orbital sanders

The first type of machine is used in cases where the putty is made of poor quality and it is necessary to remove a large layer of coating.

With orbital eccentric machines, there are difficulties in the corners, so their use in rooms with complex design solutions, with many angles is impractical.

Considering the third type. vibrating flat machines, it is worth noting that they are additionally divided into the following types:

  • Vertical;
  • Delta;
  • Polishing;
  • Brush;
  • Tape;
  • Polishing.

Sanding the walls after putty, which is carried out using a special machine, not only takes less time, but the whole process of work can be done clean.

Today, there is a convenient addition to sander that allows you to collect the resulting dust directly into a dust bag.

When making repairs in your apartment or house, you do not need to specifically buy such a machine. Indeed, today it is not cheap. For one-time work, emery, mesh is perfect.

Useful video material on the topic of the material:

The main thing is to do the work efficiently and carefully. Only then will you get perfectly smooth walls.!

When performing repair work in an apartment, it is simply impossible to do without sanding the walls and ceiling, on which a layer of putty was previously applied. After all, leveling the walls is an extremely responsible procedure, performed in several stages, one of which is grinding.

In the process of carrying out these works, you can use ordinary grinding bars, both home-made and factory-made. However, this method is associated with a significant investment of time and effort, which can be avoided by resorting to the use of grinding machines.

To ensure ease of use, as well as to increase the reliability of these devices, many of them are equipped with special dust collectors, into which fine dust from the putty gets into. Also for these purposes, the connection to a machine of a special construction vacuum cleaner is often used.

Another feature of the grinding equipment is the presence of adjusting the speed of its moving parts.

Principle of operation

The main working element of any grinder is a horizontal plane with abrasive paper fixed on it. It can be fixed in two main ways.

  • With a clamp. This is the most common option and is mainly used on household typewriters. The clamp visually resembles a spring latch. For such models, the sanding sheet must be prepared independently from sandpaper, which allows you to achieve significant savings on consumables.
  • With Velcro. Such products are slightly more expensive, they do not require additional cutting of the abrasive. Each tool provides dust removal. as a rule, a dust collector or a vacuum cleaner is used for this, some modifications are equipped with both. Connecting a vacuum cleaner is considered a very useful option, since it allows you to work without taking a break to clean the tank, which in general significantly increases the speed of work.
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Wall and ceiling sanders are produced in several versions.

Repair is a complex process that requires a professional approach at every stage.

After completing all the stages with high quality, at the finish we get a perfectly renovated room.

Not the last place in terms of the level of responsibility is taken by such a stage as grinding the walls after putty.

Firstly, it should be understood that grinding, as a process, is bringing the surface, which has been subjected to putty work, to a smooth state.

This is how the walls are prepared for painting or wallpapering. When sanding, all minor flaws are removed from the surface. Even the coolest plasterer will not be able to plaster the walls so that they would not have to be processed later.

To minimize flaws, experts recommend using a spatula that is devoid of sharp edges when applying the finishing putty. It can be started no earlier than a day after applying the last layer of putty.

Such a time period is necessary in order for the entire surface to dry, to the full depth.

Experts recommend: after applying the last layer of putty, you should refrain from applying a primer if you are going to sand the walls.

Most of the wall primer will be rubbed off when sanding! Prime the walls only after completing the process.!

Instruments

It is impossible to carry out high-quality sanding of walls after puttying without special material and tools.

Experts recommend: for high-quality and fast grinding, use a special grinder. With the help of such a tool, the work will be done efficiently and quickly.

Vibration models

This is perhaps the most common type of grinding tool. Its most typical representative is a surface grinder. It is a device equipped with a rectangular sole, on which a sheet of sandpaper with the required grain size is attached with the help of special clamps. Different grades of sandpaper are used for different types of putty. Another type of such tool is a delta sander. According to the principle of operation, it is no different from the devices of the previous type, however, it has a triangular work sole, which can become indispensable when working in hard-to-reach places (for example, when grinding corners).

Eccentric models

In everyday life, these grinders are often called orbital. They got this name because of the peculiarities of the movement of the round work sole, which simultaneously rotates around its axis and moves in orbit with a small radius. Sandpaper is attached to such a tool with Velcro. The main purpose of eccentric sanders is the finishing of the walls, on which the putty is applied, as well as their polishing.

There are special representatives of the grinding tool that are designed to work with large areas on walls and ceilings. A feature of such models is the presence of a convenient telescopic handle and gearbox, as well as the ability to install large diameter grinding wheels (usually 215 or 225 mm) on them. Wall and ceiling sander can be used not only for smoothing putty surfaces, but also for removing old paintwork, as well as for sanding stone or concrete walls. The use of such a tool will significantly reduce the time and labor required for grinding work.

It is worth noting that if the proposed repair does not provide for grinding large areas, it may be worth not thinking about buying a grinder, it is better to just rent it at one of the many construction tool rental points. The fact is that the cost of such a device is quite high, so if there is no need for its frequent use, then the question arises about the advisability of unnecessary financial costs.

The choice of the required type of grinder for each case is carried out taking into account the volume and nature of the work performed, the configuration of the surfaces to be grinded, as well as the individual preferences of the person who will perform this work. In any case, the main criterion for the correctness of the choice made will be the final result.

Summary

  • Before sanding, cover the parts and body parts that may be damaged, cover with paper and masking tape.
  • Grinding of the putty should only be carried out dry. The use of water is excluded!
  • Grinding is carried out using eccentric, surface grinders and hand planers.
  • For the initial treatment of the putty, an abrasive material of grade P80-P120 is used, for preliminary treatment. P150-P180, for processing under the primer-filler P220-P240. The border zone is blasted with P320 abrasive.
  • Use a developing coating when sanding. it will make it easier to identify defects.
  • Thoroughly remove sanding dust before each new application of the filler and after sanding.

Grinding putty: tool, gradation, technique

We continue the conversation about the reconstruction of damaged surfaces of the car body. Today we will grind what we smeared last time.

When sanding putty, we have two tasks. Firstly, we must level the surface, and secondly, we must create marks of a certain shape and size on it, which would ensure reliable adhesion of the primer layer applied over the putty and the absence of a shrinkage defect (for this, the soil must fill all the grinding marks without leaving voids at their bottom).

In practice, it has been established that the optimal cross-section of the risks should be close to triangular (it is also desirable that its bottom be slightly rounded). Risk of this shape can be achieved with eccentric (rotary vibration) sanders or manually.

Sanding putty with the Festool ETS 150/5 EQ professional eccentric sander

It is impossible to use “high-speed” mechanical tools (“angle grinders”) for leveling the putty. They are well suited for removing rust, cleaning welds and other rough jobs, but the shape of the risks they create on the putty is far from correct. Most often it has a “ragged” shape. No paint and varnish material is able to fill such risks to the end.

The pictures below clearly show the difference between the risks created by the “angle grinder” and the eccentric sander.

Risks after grinding with an angle grinder (angle grinder)

Risks after grinding with an eccentric sander

Surface grinders are also excellent for processing putty on large surfaces. They allow you to quickly give the surface the required profile when processing the first coarse layers.

Surface grinder Festool RS 100 CQ

Risks after grinding with a surface grinder

So, thanks to the proliferation of grinders, we can do a lot of grinding work faster and easier.

However, it is not entirely correct to work only with a grinder all the time. Sanders are good for quick work on coarse layers, to reduce risk and “soft” sanding before priming. The main work on shaping, delicate alignment is still done with the help of a hand tool. Only he gives us the opportunity to subtly feel the surface and understand where and how much effort needs to be made to level it.

Hand tools are grinding blocks of various sizes and characteristics.

They are also called grinders, floats, pads and even planers, for their similarity with the tool of the same name for woodworking.

Brick wall sanding / Hercules angle grinder

Thus, we must be able to correctly select the tool for each specific case and stage of processing. Only then can we achieve perfect surface quality.

Process features

The grinding process can be attributed to repair activities that are performed without much physical effort. It is much lighter than plastering, painting or wallpapering. Grinding work can be roughly divided into five stages.

Grinding material preparation. At this stage, you need to take care of a sufficient amount of sandpaper or mesh (whichever you prefer). Indeed, in the process of work, they quickly become clogged and require replacement.

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Work must start from a corner and move evenly to another corner. We start sanding from the ceiling to the floor. The size of one call must be determined from the span of your hands, often the area of ​​this call is about a meter.

With smooth movements with light pressure, begin to rub the surface. Having reached the base of the floor, we proceed to another strip also from the ceiling. The main thing at this stage is not to start sanding a section of the wall that has already been passed in the second circle.

If there is a large depression on the wall, skip this place and move on. After passing the entire wall, return and putty the problem area. After it dries, sand it individually.

Checking the quality of work. You can check the quality of sanding the walls after puttingty using a level. Of course, you should not expect a perfectly flat surface, but there should be no obvious differences either.

Experts recommend: given the fact that grinding work is a dusty process, it is necessary to isolate the repaired room from others in advance using doors or curtains on the doorway.

It is also recommended to remove tools and materials that are not being used.

Wall sanding jobs are much faster when using a sander that runs on electricity. Today, such machines are divided into three main types:

  • Draw frames;
  • Orbital eccentric machines;
  • Vibrating flat machines.

Belt and orbital sanders

The first type of machine is used in cases where the putty is made of poor quality and it is necessary to remove a large layer of coating.

With orbital eccentric machines, there are difficulties in the corners, so their use in rooms with complex design solutions, with many angles is impractical.

Considering the third type. vibrating flat machines, it is worth noting that they are additionally divided into the following types:

  • Vertical;
  • Delta;
  • Polishing;
  • Brush;
  • Tape;
  • Polishing.

wall putty sanding machine | buildskill BH-01 pro | low budget ( review )

Sanding the walls after putty, which is carried out using a special machine, not only takes less time, but the whole process of work can be done clean.

Today, there is a convenient addition to sander that allows you to collect the resulting dust directly into a dust bag.

When making repairs in your apartment or house, you do not need to specifically buy such a machine. Indeed, today it is not cheap. For one-time work, emery, mesh is perfect.

Useful video material on the topic of the material:

The main thing is to do the work efficiently and carefully. Only then will you get perfectly smooth walls.!

When performing repair work in an apartment, it is simply impossible to do without sanding the walls and ceiling, on which a layer of putty was previously applied. After all, leveling the walls is an extremely responsible procedure, performed in several stages, one of which is grinding.

In the process of carrying out these works, you can use ordinary grinding bars, both home-made and factory-made. However, this method is associated with a significant investment of time and effort, which can be avoided by resorting to the use of grinding machines.

To ensure ease of use, as well as to increase the reliability of these devices, many of them are equipped with special dust collectors, into which fine dust from the putty gets into. Also for these purposes, the connection to a machine of a special construction vacuum cleaner is often used.

Another feature of the grinding equipment is the presence of adjusting the speed of its moving parts.

Tool selection

Aligning the walls (ceiling) implies two types of finishing work. plaster and putty. After plastering the surface, even if everything was done as best as possible, there are still various uneven areas on it. This is due to the fact that the tool for such work has sharp corners. Even if you work with an exceptionally wide trowel, this cannot be avoided. Therefore, before starting finishing, you should carefully align the desired area.

This tool is pretty easy to use. It is a flat base with clamps and a handle. Sandpaper is used as an abrasive material. You can also use a special mesh. Both of these materials are equally attached to the timber. It is impossible to say for sure what is best to use. Each specific case should be approached individually.

The sanding mesh has several advantages: it is sold already cut belts, its service life is much longer, due to the fact that dust does not linger in it, but it is much more expensive than sandpaper. The latter, in addition to its low price, does not have noticeable advantages, but it suits well for small works. For large-scale projects, sandpaper is required a lot, which significantly slows down the process itself (it needs to be changed often). It also affects the final cost.

This is a very handy tool. With this tool, you can do the job in a short time. It is very important to choose the right model that will meet all the necessary parameters. As grinding materials, sandpaper is also used here, but you can purchase ready-made “consumables” that will be much more effective. The convenience of the machines lies in the fact that they are not so hard to work with, you do not need to make so much effort, especially at a height.

The process of filling the abrasive is individual, it depends on which brand (manufacturer) the tool is used. For proper operation, read the instructions.

Process features

The grinding process can be attributed to repair activities that are performed without much physical effort. It is much lighter than plastering, painting or wallpapering. Grinding work can be roughly divided into five stages.

Grinding material preparation. At this stage, you need to take care of a sufficient amount of sandpaper or mesh (whichever you prefer). Indeed, in the process of work, they quickly become clogged and require replacement.

Work must start from a corner and move evenly to another corner. We start sanding from the ceiling to the floor. The size of one call must be determined from the span of your hands, often the area of ​​this call is about a meter.

With smooth movements with light pressure, begin to rub the surface. Having reached the base of the floor, we proceed to another strip also from the ceiling. The main thing at this stage is not to start sanding a section of the wall that has already been passed in the second circle.

If there is a large depression on the wall, skip this place and move on. After passing the entire wall, return and putty the problem area. After it dries, sand it individually.

Checking the quality of work. You can check the quality of sanding the walls after puttingty using a level. Of course, you should not expect a perfectly flat surface, but there should be no obvious differences either.

Experts recommend: given the fact that grinding work is a dusty process, it is necessary to isolate the repaired room from others in advance using doors or curtains on the doorway.

It is also recommended to remove tools and materials that are not being used.

Wall sanding jobs are much faster when using a sander that runs on electricity. Today, such machines are divided into three main types:

  • Draw frames;
  • Orbital eccentric machines;
  • Vibrating flat machines.

Belt and orbital sanders

The first type of machine is used in cases where the putty is made of poor quality and it is necessary to remove a large layer of coating.

With orbital eccentric machines, there are difficulties in the corners, so their use in rooms with complex design solutions, with many angles is impractical.

Considering the third type. vibrating flat machines, it is worth noting that they are additionally divided into the following types:

  • Vertical;
  • Delta;
  • Polishing;
  • Brush;
  • Tape;
  • Polishing.
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Sanding the walls after putty, which is carried out using a special machine, not only takes less time, but the whole process of work can be done clean.

Today, there is a convenient addition to sander that allows you to collect the resulting dust directly into a dust bag.

When making repairs in your apartment or house, you do not need to specifically buy such a machine. Indeed, today it is not cheap. For one-time work, emery, mesh is perfect.

Useful video material on the topic of the material:

The main thing is to do the work efficiently and carefully. Only then will you get perfectly smooth walls.!

Share this article with your friends on social media. networks!

How to grind (sand) a surface

The tool is selected, the necessary measures are observed, now you can sand the walls after puttingty. It is important that there is good lighting, then all the irregularities will be visible. It is better to highlight the flaws right away. A simple pencil is suitable for this. Grinding starts from the top corner, then goes down. In this case, a plot of up to one meter is captured. Movements should be spiral, with slight pressure. Do the same when working with a ceiling.

When the main work is completed, you can check the resulting result. To do this, you should direct the light along the wall, all unfinished places will be immediately visible. Also, we must not forget about the building level. It is applied to a surface and driven over it. Any irregularities will be visible. If they are minor, a sander can be used to fix them. This is done until the moment when everything is smooth. The putty is very soft, handled with care.

A beautiful and high-quality repair provides for a large amount of complex work that requires certain skills and experience. In order to speed up and facilitate this process, manufacturers produce special equipment. These options include a machine for sanding walls after applying putty and a station for preparing mortars.

Types of grinders

According to the principle of operation, such devices can be divided into two main types: pneumatic and electrical.

The main advantage of pneumatic models is their low weight and relatively low cost. Such devices are very often used as a professional tool, since even with prolonged work with them, hands do not get tired and labor productivity does not decrease. These positive qualities can be explained very simply. pneumatic devices do not have motors. Their working mechanism is set in motion under the influence of compressed air pressure supplied through a hose from a special compressor.

The main disadvantage of pneumatic grinders is the presence of a bulky compressor. In other words, such a tool can only work in a workshop where there is a possibility of supplying compressed air. That is why devices of this type are mainly used in car services and are rarely used for repair work. If such equipment is used to carry out repairs in your own apartment, you will have to additionally purchase an expensive compressor.

As for electric models, their main advantage is high mobility. The ability to connect to the mains is almost always there, and using an extension cord is absolutely no problem. The disadvantages of a power tool include its relatively large weight and overall dimensions, as well as its high cost.

If a sander is chosen for repair work in a house or apartment and will not be used in the future on large construction projects, then the choice in favor of electric models is obvious.

According to the method of action on the treated surface, grinders can be conditionally divided into the following groups:

Let’s take a closer look at each of these types of grinders.

The main stage

Now let’s figure out how to grind the putty correctly, detailed instructions for carrying out the work look like this:

This is what a step-by-step workflow looks like.

  • In order to achieve the best result, it is necessary to properly secure the sandpaper or mesh. In normal versions, you need to unscrew the lamb, move the bar, insert the end of the paper under it, and then fix the element. In the grinding stones and some new models of graters, an automatic clamp is provided, which rises and falls with a lever, which is very convenient;

Mesh is usually sold in sheets to suit the size of the grater (the elements must be longer than the sole to attach them). As for the paper, it goes on a roll, so as not to tear off pieces and spoil the material during work, I advise you to pre-cut the elements of the required size, this will greatly simplify the replacement of sandpaper.

  • Work starts from any corner on the ceiling, and if you are sanding walls, then you need to choose the upper corner of it. The process is quite simple: you, by gently pressing on the tool, grind the surface, you do not need to press hard, otherwise you will remove too much and make the surface not even, but even more curved. In the process of grinding, constantly monitor the condition of the abrasive element. lightly tap on the block to remove the putty;

It is better to go through again later than to remove the excess

  • The work is carried out in the chosen direction, it is important to process all areas, so observe the order. You also need to move the grater not at random, but in a kind of spiral. This will ensure the best sanding quality and speed up your workflow. To make it clearer for you, a simple diagram is presented below, it will help to understand the process even for those who have no idea how to work;

You move the grater or block in a spiral in a specific direction

  • When working, constantly monitor each area with a spotlight or lamp, this allows you to quickly correct individual areas and move on without returning to them. It is more convenient to use an ordinary carrier under the ceiling, and near the wall you can put a spotlight on a tripod, then you will constantly see the plane, and you will not need to be distracted by highlighting the area you just treated;

Backlight allows you to reveal the slightest flaws on the surface

  • If in the process of work you find problem areas, then you need to remember their location and, after grinding, prepare a small amount of putty to seal all the flaws. Do not worry, after finishing, everything will be leveled, and the repair sites will not be visible, because you will remove all the excess with a bar;
  • Finishing is done only if you paint the surface, it is done with fine-grained sandpaper or mesh. The technology does not differ from the one described above, everything is repeated in the same sequence, it is important to be careful and try to achieve perfect surface smoothness. If your sandpaper leaves a mowing line, then you need to take the smaller option.

After the completion of the work, we get perfectly flat surfaces.

If you have corners, then you should pay special attention to them, the fact is that the float leaves a strip of untreated surface, which degrades the appearance. With the help of a sponge, you can eliminate this flaw very quickly and efficiently, the photo below clearly shows the difference.

The grater cannot completely sand corners, so an abrasive sponge is needed for perfect results

After work, you need to clean the surface of dust and apply primer, it will strengthen the putty layer and make it much more resistant to damage. After that, you can either paint the surface, or apply any decorative compositions to it.